US equities opened higher on Monday as a wave of AI optimism followed Anthropic's public S-1 filing, while oil prices pulled back and a warning from Elon Musk pressured neocloud and crypto-adjacent data-center names.
The Dow Jones Industrial Average rose 212 points, or 0.4%, the S&P 500 added 0.3%, and the Nasdaq Composite advanced 0.3%. The rebound followed two consecutive weekly declines for the S&P 500 and Nasdaq, with Friday's session ending lower across all three major indexes.
Anthropic, the company behind the Claude family of AI models, publicly filed its registration statement ahead of a much-anticipated IPO under the ticker ANT. The filing revealed $16.3 billion in revenue for the six months ended in June, compared with $4.6 billion for the whole of 2025, but also a loss of $80.7 billion in the first half of 2026. Investors treated the listing as a positive catalyst for the broader AI ecosystem.
Nvidia gained 2.63% to $216.50, Micron jumped 2%, Intel rose 1%, and Advanced Micro Devices climbed 0.73%. The Philadelphia Semiconductor Index moved 3.68% higher. SpaceX added further support after Musk said the company had struck a $40 billion master finance lease to purchase Nvidia GPUs for xAI and related data center projects, with the graphics processors expected to arrive in the first half of 2027. Cadence Design Systems also announced an expanded partnership with Nvidia, unveiling a portfolio of AI models called Cadence Maestro built partly on Nvidia's open-weight Nemotron model.
At the same time, Musk warned that more than 200 neocloud companies could face failures and consolidation because debt markets have almost entirely shut off access to money for firms without substantial revenue independent of AI data centers. Shares of CoreWeave fell about 2.2%, Nebius declined more than 4.4%, and IREN dropped roughly 2%. IREN is a bitcoin mining and AI data-center operator, making the neocloud financing warning a relevant risk signal for crypto-adjacent infrastructure names.
In energy markets, Brent crude dropped 1% to $115.42 a barrel and West Texas Intermediate fell 1.72% to $101.45 after reports that Qatari mediators traveled to Tehran to ease US-Iran tensions. However, Houthi attacks on Saudi airport and oil facilities kept supply risks elevated. In Brazil, Lula's election win pressured US-listed Brazilian stocks: Petrobras plunged 16%, Itaú Unibanco fell 21%, Ambev dropped 12%, Vale declined 1.72%, and Embraer lost about 3%.
From a crypto-market perspective, the session offered no direct token-specific catalyst. The main transmission channel is risk sentiment and the financing outlook for AI data centers, which intersects with bitcoin mining operators such as IREN that are increasingly pivoting toward AI compute.
